src/v8/test/mjsunit/es6/regress/regress-2186.js

// Copyright 2012 the V8 project authors. All rights reserved.
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function heapify(i) {
  return 2.0 * (i / 2);
}
heapify(1);

var ONE = 1;
var ANOTHER_ONE = heapify(ONE);
assertSame(ONE, ANOTHER_ONE);
assertEquals("number", typeof ONE);
assertEquals("number", typeof ANOTHER_ONE);

var set = new Set;
set.add(ONE);
assertTrue(set.has(ONE));
assertTrue(set.has(ANOTHER_ONE));

var map = new Map;
map.set(ONE, 23);
assertSame(23, map.get(ONE));
assertSame(23, map.get(ANOTHER_ONE));